2 * Copyright (c) 2001 David E. O'Brien
3 * Copyright (c) 1990 The Regents of the University of California.
6 * This code is derived from software contributed to Berkeley by
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the University of
20 * California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * from: @(#)param.h 5.8 (Berkeley) 6/28/91
41 #ifndef _ARM_INCLUDE_PARAM_H_
42 #define _ARM_INCLUDE_PARAM_H_
45 * Machine dependent constants for StrongARM
48 #include <machine/_align.h>
50 #define STACKALIGNBYTES (8 - 1)
51 #define STACKALIGN(p) ((u_int)(p) & ~STACKALIGNBYTES)
53 #define __PCI_REROUTE_INTERRUPT
59 #if defined(__FreeBSD_ARCH_armv6__) || (defined(__ARM_ARCH) && __ARM_ARCH >= 6)
61 #define MACHINE_ARCH "armv6eb"
63 #define MACHINE_ARCH "armv6"
67 #define MACHINE_ARCH "armeb"
69 #define MACHINE_ARCH "arm"
73 #define MID_MACHINE MID_ARM6
75 #if defined(SMP) || defined(KLD_MODULE)
81 #endif /* SMP || KLD_MODULE */
87 #define ALIGNBYTES _ALIGNBYTES
88 #define ALIGN(p) _ALIGN(p)
90 * ALIGNED_POINTER is a boolean macro that checks whether an address
91 * is valid to fetch data elements of type t from on this architecture.
92 * This does not reflect the optimal alignment, just the possibility
93 * (within reasonable limits).
95 #define ALIGNED_POINTER(p, t) ((((unsigned)(p)) & (sizeof(t)-1)) == 0)
98 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an
99 * architecture. It should be used with appropriate caution.
101 #define CACHE_LINE_SHIFT 6
102 #define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT)
104 #define PAGE_SHIFT 12
105 #define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */
106 #define PAGE_MASK (PAGE_SIZE - 1)
107 #define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
109 #define PDR_SHIFT 20 /* log2(NBPDR) */
110 #define NBPDR (1 << PDR_SHIFT)
111 #define NPDEPG (1 << (32 - PDR_SHIFT))
113 #define MAXPAGESIZES 1 /* maximum number of supported page sizes */
116 #define KSTACK_PAGES 2
117 #endif /* !KSTACK_PAGES */
119 #ifndef FPCONTEXTSIZE
120 #define FPCONTEXTSIZE (0x100)
123 #ifndef KSTACK_GUARD_PAGES
124 #define KSTACK_GUARD_PAGES 1
125 #endif /* !KSTACK_GUARD_PAGES */
127 #define USPACE_SVC_STACK_TOP KSTACK_PAGES * PAGE_SIZE
128 #define USPACE_SVC_STACK_BOTTOM (USPACE_SVC_STACK_TOP - 0x1000)
129 #define USPACE_UNDEF_STACK_TOP (USPACE_SVC_STACK_BOTTOM - 0x10)
130 #define USPACE_UNDEF_STACK_BOTTOM (FPCONTEXTSIZE + 10)
132 * Mach derived conversion macros
134 #define trunc_page(x) ((x) & ~PAGE_MASK)
135 #define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK)
136 #define trunc_4mpage(x) ((unsigned)(x) & ~PDRMASK)
137 #define round_4mpage(x) ((((unsigned)(x)) + PDRMASK) & ~PDRMASK)
139 #define atop(x) ((unsigned)(x) >> PAGE_SHIFT)
140 #define ptoa(x) ((unsigned)(x) << PAGE_SHIFT)
142 #define arm32_btop(x) ((unsigned)(x) >> PAGE_SHIFT)
143 #define arm32_ptob(x) ((unsigned)(x) << PAGE_SHIFT)
145 #define pgtok(x) ((x) * (PAGE_SIZE / 1024))
147 #endif /* !_ARM_INCLUDE_PARAM_H_ */